Correct Answer: A

Rationale: The correct answer is A: Protective isolation and vigilant use of standard precautions. Induction therapy for acute myeloid leukemia (AML) can lead to neutropenia, significantly increasing the risk of infections. Therefore, the priority is to protect the patient from potential pathogens by implementing protective isolation measures and adhering to strict standard precautions. This action is crucial for the patient's survival. Choice B is incorrect as nutritional support and oral hygiene are important but not the priority in this situation. Choice C, involving the family in planning activities, is a valuable aspect of care but not the priority during induction therapy. Choice D, monitoring and treating pain, is essential but ensuring protection against infection takes precedence due to the high risk of neutropenia.

Correct Answer: D

Rationale: An absolute neutrophil count of 500/mm3 indicates severe neutropenia, putting the client at high risk for infection. Neutrophils are crucial in fighting off infections; a low count increases susceptibility to infections. Platelet count, white blood cell count, and hemoglobin levels are within normal ranges and do not require immediate intervention in this scenario.

Correct Answer: D

Rationale: The nurse should encourage patients to reduce other factors that increase the risk of developing second cancers, such as the use of tobacco and alcohol and exposure to environmental carcinogens and excessive sunlight. Choice A is too general and does not address the specific concerns of a cancer patient. Choice B uses fear tactics, which may not be the most effective approach. Choice C is vague and does not provide a clear rationale for the behavior change, unlike Choice D which specifically links the behaviors to reducing the risk of second cancers.

Correct Answer: B

Rationale: Radiation-induced fatigue can last for months; it's important to normalize this for the client.

Correct Answer: D

Rationale: In cases where a patient does not respond appreciably to therapy, it is crucial to identify and respect the patient's choices regarding treatment, including preferences for end-of-life care. Option A is incorrect because it focuses on spiritual support rather than the patient's care preferences. Option B is incorrect as it assumes non-adherence to treatment without evidence. Option C is incorrect as it suggests an alternative treatment approach without considering the patient's wishes for end-of-life care.